Tool for use in assembling and disassembling the siphons of drier drums



1940. H. G. CRAM 2,224,857

TOOL FOR USE IN ASSEMBLING,-AND DISASSEMBLING THE-SIPHONS OF DRIER DRUMSFiled Sept. 16, 1937 2 Sheets-Sheet l m, v ATTORNEY.

Dec. 17, 1940. H. G. CRAM 2,224,857

TOOL FOR USE IN ASSEMBLING AND DISASSEMBLING THE SIPHONS OF DRIER DRUMSFiled Sept. 16, 1937 2 Sheets-Sheet 2 INVENTOR. fiQ'm n 6;. 61mm BY X51,MB

ATTORNEY.

Patented Dec. 17,1940

UNIT-ED STATE- AS SEMBLING: THE, DRUMS:

ENT OFFICE 'roonron osn I Y V 'DIS- SIPHONS; OF- mane. I

Hervey G. Cram, Appleton, Wis. I Applicationseptember 1s, 193-7,SerialNo.}164,182-- 3 Claims.

This;inrenticn;..relates;;to,anrimprovement in siphonsqfo'r drierdrainage'systems' and to means, designed :to. facilitate-the:assemblyand disassemblyrofrsiphons, with the drier drums;

Inopaper: making machinery it is customary toemploysal battery-of'dri'ersu Each drier hasua drier -drum to r, the interior of which steamis supplied for the purpose of heating thedrum. Naturallyuthe steamcondenses: andefiicientyoneratiornrequiresxrthat this condensate beremoved For thispurpose it. has been the practice to provideeachsdrieivdrumiwith-some form of siphon usually iin'xthe form of :a.curved; pipe extending through a steam joint in the outer end of one-ofthe hollow trunnions of the drier andzthemcurved down to a low point inthexdrier; Where such a pipe is. employed it must-be-i curvedl onaqlarge enough radius and be 0i such length that: it may be insertedthrough the rather long hollow trunnion of: the .drier and. yet have itslow inlet end closeto the'ilow point in the drier "drums. Where such anarrangement is resorted. to anumber of; difficulties. are iencounteredgIn the first place, any oscillation: ofarthei steam :joint; and the vi-"brations incidentali tothe operation of the ma- .chine' alwayszres'ultjin some oscillation; will "be, transmitted in.-the low or inletend of thesiphon pipe due to the lever arm betweerr .the lowerinlet endof the siphon :pipe and: the point of its support. on the steam/joint:Consequently there isdanger*offtheninlet-end'ofthe siphon pipe.

contactingethe (rotating idrier: drum. Such :com tactswill. result indamage! to the-siphon or clos-' irigiof its; inlet end thereby'preventing'it from functioning to tremovlelthe condensate. Furthermore;thesnecessary long length of 'thefsi-phon pipe :increases' its weightand also" increases the 1e'verage with which this weight is appli'ed' tothe point. of "its support to the steam joint thereby putting excessivestrain on the siphon at the point ofits'support;

Anytother arrangements thatihave been pro-' posed and-:whichdcnotinvolve the use 01' along curvedxpipe require'the installation ofasiphon arrangement through :hand'holes in the head of the drier andworking-them back through the trunnion-from the inside-of the-drier.These are difiicult and expensive iexpedients and especially so as thedriers areygenerally at a highxtemperature w The, presentinventionproposes 2.. siphonwhich. inthe assembly-is made up ofa-vertical pipe legidisposedzwithin thedrierdrum adjacent the inner-end-of' one---hollow trunnion'of the drier and extending-from a point closeto the,

(oi. 29-84) I axis'of rotation of the drier down toalow'point in thel-drier drum. A'horizontal pipe leg; extends through the steam jointand: through the hollow trunnion and has its inner end" disposedadjacent the upper end of the vertical, pipe leg, An elbow threadedlyinterconnects the, inner; end of the horizontatv leg withthe 1 upper;endof; the vertical leg. The elbow is provided with projections whichmay take the form of 'diametri-' cally opposed horizontal pinsproiectinglaterally lr from thesidesof therelbow. Y

Along, with this siphon arrangement the pres-- ent invention; proposes la tool designed {to facili-= tate its assembly a'nd'disassembl-y withthe drier drum. The-tool-comprises anelongated barrel provided-at its.inner; end with a hollow head-.- The (head and.barrelare so dimensionedas to'be susceptible.- of convenient insertion in through the, hollowtrunnion oi-thedrier drum. ,Thehead ofthe tool is providedwithdiametrically opposed 2o slotsadapted to receive the'pins of the elbowand is also equipped with springdevices engageable, with the outer, endsot-the pinsnto, retain them in the slotswhilepermittingthem-to: pivotthereinabout-theirownaxes.- With-such. a tooland a siphon constructedthe manner described, thesiphon maybe-assembled .with..the,drierdrum "asfollows: The elbow is-firStQsecurely threadedly engaged" with theupperendeof thevertical leg :ot the siphon. The horizontal leg is leftdisconnected. Thepins oithe-elbow arethen introduced into the slots ofthe head. of-thetool. and snapped-under the spring device thereof;Thevertical leg and elbow arethen swung into horizontal alinement with.the tool and ;are.introducede while so positioned throughvthe-hollowtrunnion ofthe drier drum, the steam joint having been removed. As thevertical 'leg of the pipe and elbow pass through the trunnion andintothedrum they swing about their pins around to a position where the verticallegis vertically disp'osed'in the drum. The horizontal leg of the siphonis then introduced through. the barrel. The barrel'is provided withmeans .wherebyit may be held against rotation and a Stillson wrench orother suitable tool is utilized to turnvthe horizontal leg'up into firm"and secured threaded engagement with the elbow. The tool is then-pulledback off of 'the siphon arrangementan'd the steam joint assembled;Thereversal of this operation will efie'ct disassembly of. the parts;

This arrangement has the distinct advantage of greatly facilitatingthe'assembly anddisassem- ,bly of the siphon. When-the siphon isinstalled ed out in the appended claims, reference being had to theaccompanying drawings forming a part of this specification and in which:

Figure 1 is a view partly in side elevation and partly in vertical crosssection illustrating the tool in the operation of inserting the verticalleg and elbow in through the hollow trunnion of a drier drum;

Figure 2 is a view similar to Figure 1 but showing how the vertical legswings around to vertical position after the inserting operation hasbeen completed;

Figure -3 is a similar view showing how the horizontal leg of the siphonis coupled with the elbow;

Figure 4 is a view in cross section taken on line 4-4 of Figure 3;

Figure 5 is a fragmentary view partly in vertical section and partly inside elevation showing how the tool is removed from legs of the siphon;

Figure 6 is a view partly in side elevation and partly in vertical crosssection showing the steam joint assembled with the trunnion of the drierdrum and with the siphon arrangement;

Figure 7 is a fragmentary view in side elevation and on an enlargedscale showing the elbow and a fragment of one of the pipe legs of thesiphon;

Figure 8 is a view in end elevation looking toward the left hand side.of Figure 7;

Figure 9 is a fragmentary view in side elevation showing the head and aportion of the barrel of the tool;

Figure 10 is a view thereof in top plan; and Figure 11 is a view in endelevation illustrating the tool and showing the elbow and its pinsassembled therewith.

Referring to the drawings, the numeral I designates a drier drumprovided with the usual hollow trunnions, one of which is shown at 2.

The siphon arrangement embodying the present invention includes avertical leg 3, a horizontal leg 4, and an elbow 5 threadedlyinterconnected with the upper end of the vertical leg and the inner endof the horizontal leg 4. In the assembly the'horizontal leg 4 passesthrough and is supported in the conventional steam joint 6. As thestructure of the steam joint is well known and is conventional it willnot be described in detail. It will be noted however that it isdetachably secured to the outer end of the hollow trunnion of the drier.The I elbow 5 is provided with diametrically opposed pins 1 which arefixed to the elbow and project laterally therefrom. The tool used forassembling and disassem bling thesiphon with the drier includes anelongated barrel 18. A hollow bifurcated head II is fixed to' the innerend of the barrel and has diametricallyopposite slots l2 designed toreceive' the pins 1. Springs I3 are secured by the assembled screws E4to the head and overlie the slots I 2. The inner faces of these springsare formed with indentations or recesses l5 into which the outer ends ofthe pins snap. In this way the pins and the elbow are releasably securedin the slots l2 although they may pivot therein about their own axes.

In assemblingthe siphon with the drum, the elbow 5 is first securelythreadedly interconnected with the upper end of the vertical leg 3. Thepins 1 of the elbow are then introduced into the slots 12 and snappedinto engagement with the recesses [5 of the springs l3. The leg 3, elbow5 and tool are then passed in through the hollow trunnion 2 as shown inFigure 1 until the leg 3 drops down to the vertical position shown inFigure 2. The horizontal leg 4 of the siphon is then introduced inthrough the barrel l0 and its inner end is threaded into the elbow. Inorder that it may be turned up into very secure engagement with theelbow a handle I 6 is clamped as at IT to the outer end of the barreland provides a means whereby the barrel may be held against rotation. Asuitabletool such as a Still-. son wrench l8 may be engaged with theouter end of the horizontal leg 4 which projects beyond the outer end ofthe barrel In to effect the desired tight engagement between the innerend of the leg 4 and-the elbow 5. The wrench I8 is then disengaged andthe tool pulled back 011' ofthe leg 4, the springs l3 yielding to allowthe pins 1 to be disengaged. The outer end of the legl may be heldagainst axial movement at this time.

The steam joint 6 is then assembled and the siphon is ready for use.

Byremoving the steam joint and reversing the operation just describedthe siphon may be readily removed.

While I have shown and described one construction in which the inventionmay be advantageously embodied, it is to be understood that theconstruction shown has been selected merely for the purpose ofillustration or example and that various changes in the size, shape andarrangement of the parts may be made without departing from the spiritof the invention or the scope of the subjoined claims.

The invention claimed is:

1. A tool for use in assembling and disassembling angularly related andthreadedly interconnected parts in crowded quarters and comprising anelongated barrel adapted to be telescoped over one of the parts, ahollow head secured to one end of the barrel and having slots adapted toreceive projections on another of said parts, and means on the headadapted to engage the projections and retain them in the slots whileproviding for pivotal movement thereof about their own axes.

2. A tool for use in assembling and disassembling angularly related andthreadedly interconnected parts in crowded quarters and comprising anelongated barrel adapted to be telescoped over one of the parts, ahollow head secured to one end of the barrel and having slots adapted toreceive projections on another of said parts, and spring devices carriedby the head and overlying the slots and adapted to engage theprojections and retain them in the slots while providing for pivotalmovement thereof about their own axes. 3. A tool for use in assemblingand disassembling the horizontal and vertical legs of a siphon of adrier drum of the type wherein the legs are connected together by anelbow with which they are threadedly engaged and comprising an elongatedbarrel having a hollow bifurcated head,

v said barrel and its head being adapted to be telescoped over thehorizontal leg of the siphon with the bifurcations of the headstraddling said elbow, said bifurcations having opposed slots adapted toslidably receive lateral projections on the elbow, and spring platessecured to the head and overlapping the slots and having sockets adaptedto snap over and interengage with the ends of the projections to retainthem in the slots and constrain them against all but pivotal movementabout their own axis while the projec- 5 tions and sockets areinterengaged.

HERVEY G. CRAM.

